The main motivation for the use of the Universal PoS tag set was that this is a newly emerging standard which is actively being used for annotation of a range of different languages through the community-driven Universal Dependencies effort [1]}. Additionally, this tag set is coarser than the original BNC one: it simplifies the workflow and eliminates the necessity to merge `inflectional' tags into one (e.g., singular and plural nouns into one `noun' class). This conforms with our interest in parts of speech proper, not inflectional forms within one PoS. We worked with the following 16 Universal tags: ADJ, ADP, ADV, AUX, CONJ, DET, INTJ, NOUN, NUM, PART, PRON, PROPN, SCONJ, SYM, VERB, X (punctuation tokens marked with the PUNCT tag were excluded).
